25201012055531 has 16 divisors (see below), whose sum is σ = 27226490928000. Its totient is φ = 23187960263808.

The previous prime is 25201012055441. The next prime is 25201012055573. The reversal of 25201012055531 is 13555021010252.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25201012055531 is a prime.

It is a super-2 number, since 2×25201012055531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25201012055231) 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, 91303070 + ... + 91578668.

It is an arithmetic number, because the mean of its divisors is an integer number (1701655683000).

Almost surely, 2^{25201012055531} is an apocalyptic number.

25201012055531 is a deficient number, since it is larger than the sum of its proper divisors (2025478872469).

25201012055531 is a wasteful number, since it uses less digits than its factorization.

25201012055531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298118.

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 25201012055531 its reverse (13555021010252), we get a palindrome (38756033065783).

The spelling of 25201012055531 in words is "twenty-five trillion, two hundred one billion, twelve million, fifty-five thousand, five hundred thirty-one".