25461653025898 has 4 divisors (see below), whose sum is σ = 38192479538850. Its totient is φ = 12730826512948.

The previous prime is 25461653025883. The next prime is 25461653025899. The reversal of 25461653025898 is 89852035616452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13906432931689 + 11555220094209 = 3729133^2 + 3399297^2 .

It is a super-2 number, since 2×25461653025898² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25461653025899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365413256473 + ... + 6365413256476.

Almost surely, 2^{25461653025898} is an apocalyptic number.

25461653025898 is a deficient number, since it is larger than the sum of its proper divisors (12730826512952).

25461653025898 is a wasteful number, since it uses less digits than its factorization.

25461653025898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12730826512951.

The product of its (nonzero) digits is 124416000, while the sum is 64.

The spelling of 25461653025898 in words is "twenty-five trillion, four hundred sixty-one billion, six hundred fifty-three million, twenty-five thousand, eight hundred ninety-eight".