1427825641 has 4 divisors (see below), whose sum is σ = 1557627984. Its totient is φ = 1298023300.

The previous prime is 1427825629. The next prime is 1427825647. The reversal of 1427825641 is 1465287241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1465287241 = 11 ⋅133207931.

It is a cyclic number.

It is not a de Polignac number, because 1427825641 - 2⁷ = 1427825513 is a prime.

It is a super-2 number, since 2×1427825641² = 4077372122194121762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1427825594 and 1427825603.

It is not an unprimeable number, because it can be changed into a prime (1427825647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64901155 + ... + 64901176.

It is an arithmetic number, because the mean of its divisors is an integer number (389406996).

Almost surely, 2^1427825641 is an apocalyptic number.

1427825641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1427825641 is a deficient number, since it is larger than the sum of its proper divisors (129802343).

1427825641 is a wasteful number, since it uses less digits than its factorization.

1427825641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129802342.

The product of its digits is 107520, while the sum is 40.

The square root of 1427825641 is about 37786.5801707432. The cubic root of 1427825641 is about 1126.0518599387.

The spelling of 1427825641 in words is "one billion, four hundred twenty-seven million, eight hundred twenty-five thousand, six hundred forty-one".