25601401455 has 32 divisors (see below), whose sum is σ = 47124046848. Its totient is φ = 11625984000.

The previous prime is 25601401451. The next prime is 25601401459. The reversal of 25601401455 is 55410410652.

It is an interprime number because it is at equal distance from previous prime (25601401451) and next prime (25601401459).

It is not a de Polignac number, because 25601401455 - 2² = 25601401451 is a prime.

It is a super-2 number, since 2×25601401455² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25601401451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791506 + ... + 823215.

It is an arithmetic number, because the mean of its divisors is an integer number (1472626464).

Almost surely, 2^25601401455 is an apocalyptic number.

25601401455 is a deficient number, since it is larger than the sum of its proper divisors (21522645393).

25601401455 is a wasteful number, since it uses less digits than its factorization.

25601401455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614887.

The product of its (nonzero) digits is 24000, while the sum is 33.

The spelling of 25601401455 in words is "twenty-five billion, six hundred one million, four hundred one thousand, four hundred fifty-five".