25345040135254 has 24 divisors (see below), whose sum is σ = 44453651373288. Its totient is φ = 10805879427840.

The previous prime is 25345040135251. The next prime is 25345040135279. The reversal of 25345040135254 is 45253104054352.

It is a super-2 number, since 2×25345040135254² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25345040135254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25345040135251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 669988492 + ... + 670026319.

It is an arithmetic number, because the mean of its divisors is an integer number (1852235473887).

Almost surely, 2^{25345040135254} is an apocalyptic number.

25345040135254 is a deficient number, since it is larger than the sum of its proper divisors (19108611238034).

25345040135254 is a wasteful number, since it uses less digits than its factorization.

25345040135254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340015020 (or 1340015013 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 43.

The spelling of 25345040135254 in words is "twenty-five trillion, three hundred forty-five billion, forty million, one hundred thirty-five thousand, two hundred fifty-four".