25641613001 has 16 divisors (see below), whose sum is σ = 27276998400. Its totient is φ = 24035373648.

The previous prime is 25641612989. The next prime is 25641613021. The reversal of 25641613001 is 10031614652.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25641613001 - 2³⁴ = 8461743817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25641613021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1739006 + ... + 1753688.

It is an arithmetic number, because the mean of its divisors is an integer number (1704812400).

Almost surely, 2^25641613001 is an apocalyptic number.

It is an amenable number.

25641613001 is a deficient number, since it is larger than the sum of its proper divisors (1635385399).

25641613001 is a wasteful number, since it uses less digits than its factorization.

25641613001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15668.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 25641613001 in words is "twenty-five billion, six hundred forty-one million, six hundred thirteen thousand, one".