25525941961 has 16 divisors (see below), whose sum is σ = 27558760320. Its totient is φ = 23503115520.

The previous prime is 25525941943. The next prime is 25525941971. The reversal of 25525941961 is 16914952552.

It is a cyclic number.

It is not a de Polignac number, because 25525941961 - 2¹¹ = 25525939913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25525941941) 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, 16372500 + ... + 16374058.

It is an arithmetic number, because the mean of its divisors is an integer number (1722422520).

Almost surely, 2^25525941961 is an apocalyptic number.

It is an amenable number.

25525941961 is a deficient number, since it is larger than the sum of its proper divisors (2032818359).

25525941961 is a wasteful number, since it uses less digits than its factorization.

25525941961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936.

The product of its digits is 972000, while the sum is 49.

The spelling of 25525941961 in words is "twenty-five billion, five hundred twenty-five million, nine hundred forty-one thousand, nine hundred sixty-one".