25361540062531 has 16 divisors (see below), whose sum is σ = 26016932712960. Its totient is φ = 24711067612000.

The previous prime is 25361540062517. The next prime is 25361540062571. The reversal of 25361540062531 is 13526004516352.

It is not a de Polignac number, because 25361540062531 - 2¹³ = 25361540054339 is a prime.

It is a super-2 number, since 2×25361540062531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25361540062571) 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, 23888460 + ... + 24927526.

It is an arithmetic number, because the mean of its divisors is an integer number (1626058294560).

Almost surely, 2^{25361540062531} is an apocalyptic number.

25361540062531 is a deficient number, since it is larger than the sum of its proper divisors (655392650429).

25361540062531 is a wasteful number, since it uses less digits than its factorization.

25361540062531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041434.

The product of its (nonzero) digits is 648000, while the sum is 43.

Adding to 25361540062531 its reverse (13526004516352), we get a palindrome (38887544578883).

The spelling of 25361540062531 in words is "twenty-five trillion, three hundred sixty-one billion, five hundred forty million, sixty-two thousand, five hundred thirty-one".