25064017261 has 8 divisors (see below), whose sum is σ = 25652841984. Its totient is φ = 24477507120.

The previous prime is 25064017249. The next prime is 25064017267. The reversal of 25064017261 is 16271046052.

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 25064017261 - 2⁵ = 25064017229 is a prime.

It is a super-2 number, since 2×25064017261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25064017267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556725 + ... + 600058.

It is an arithmetic number, because the mean of its divisors is an integer number (3206605248).

Almost surely, 2^25064017261 is an apocalyptic number.

It is an amenable number.

25064017261 is a deficient number, since it is larger than the sum of its proper divisors (588824723).

25064017261 is a wasteful number, since it uses less digits than its factorization.

25064017261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157291.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 25064017261 in words is "twenty-five billion, sixty-four million, seventeen thousand, two hundred sixty-one".