1401425511 has 4 divisors (see below), whose sum is σ = 1868567352. Its totient is φ = 934283672.

The previous prime is 1401425507. The next prime is 1401425527. The reversal of 1401425511 is 1155241041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1155241041 = 3 ⋅385080347.

It is a cyclic number.

It is not a de Polignac number, because 1401425511 - 2² = 1401425507 is a prime.

It is a super-2 number, since 2×1401425511² = 3927986925763222242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401425411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233570916 + ... + 233570921.

It is an arithmetic number, because the mean of its divisors is an integer number (467141838).

Almost surely, 2^1401425511 is an apocalyptic number.

1401425511 is a deficient number, since it is larger than the sum of its proper divisors (467141841).

1401425511 is an equidigital number, since it uses as much as digits as its factorization.

1401425511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467141840.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1401425511 is about 37435.6182131403. The cubic root of 1401425511 is about 1119.0685045682.

Adding to 1401425511 its reverse (1155241041), we get a palindrome (2556666552).

The spelling of 1401425511 in words is "one billion, four hundred one million, four hundred twenty-five thousand, five hundred eleven".