26125593921 has 96 divisors (see below), whose sum is σ = 48234950400. Its totient is φ = 13285762560.

The previous prime is 26125593919. The next prime is 26125593941. The reversal of 26125593921 is 12939552162.

26125593921 is a `hidden beast` number, since 2 + 6 + 1 + 2 + 559 + 3 + 92 + 1 = 666.

It is not a de Polignac number, because 26125593921 - 2¹ = 26125593919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26125593941) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1274211 + ... + 1294551.

It is an arithmetic number, because the mean of its divisors is an integer number (502447400).

Almost surely, 2^26125593921 is an apocalyptic number.

26125593921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26125593921 is a deficient number, since it is larger than the sum of its proper divisors (22109356479).

26125593921 is a wasteful number, since it uses less digits than its factorization.

26125593921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20439 (or 20436 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The spelling of 26125593921 in words is "twenty-six billion, one hundred twenty-five million, five hundred ninety-three thousand, nine hundred twenty-one".