1425452491 has 8 divisors (see below), whose sum is σ = 1478476944. Its totient is φ = 1373191200.

The previous prime is 1425452467. The next prime is 1425452513. The reversal of 1425452491 is 1942545241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425452491 - 2¹⁹ = 1424928203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1425452491.

It is not an unprimeable number, because it can be changed into a prime (1425452461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186985 + ... + 194458.

It is an arithmetic number, because the mean of its divisors is an integer number (184809618).

Almost surely, 2^1425452491 is an apocalyptic number.

1425452491 is a deficient number, since it is larger than the sum of its proper divisors (53024453).

1425452491 is a wasteful number, since it uses less digits than its factorization.

1425452491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381581.

The product of its digits is 57600, while the sum is 37.

The square root of 1425452491 is about 37755.1650903555. The cubic root of 1425452491 is about 1125.4276539720.

The spelling of 1425452491 in words is "one billion, four hundred twenty-five million, four hundred fifty-two thousand, four hundred ninety-one".