25015255251051 has 64 divisors (see below), whose sum is σ = 38074821313536. Its totient is φ = 14472262656000.

The previous prime is 25015255251047. The next prime is 25015255251101. The reversal of 25015255251051 is 15015255251052.

It is not a de Polignac number, because 25015255251051 - 2² = 25015255251047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (25015255251251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4066856826 + ... + 4066862976.

It is an arithmetic number, because the mean of its divisors is an integer number (594919083024).

Almost surely, 2^{25015255251051} is an apocalyptic number.

25015255251051 is a deficient number, since it is larger than the sum of its proper divisors (13059566062485).

25015255251051 is a wasteful number, since it uses less digits than its factorization.

25015255251051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12052.

The product of its (nonzero) digits is 125000, while the sum is 39.

Subtracting from 25015255251051 its reverse (15015255251052), we obtain a palindrome (9999999999999).

The spelling of 25015255251051 in words is "twenty-five trillion, fifteen billion, two hundred fifty-five million, two hundred fifty-one thousand, fifty-one".