25163044989 has 32 divisors (see below), whose sum is σ = 36507542400. Its totient is φ = 15352123392.

The previous prime is 25163044979. The next prime is 25163044993. The reversal of 25163044989 is 98944036152.

It is not a de Polignac number, because 25163044989 - 2¹⁶ = 25162979453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25163044909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3957637 + ... + 3963989.

It is an arithmetic number, because the mean of its divisors is an integer number (1140860700).

Almost surely, 2^25163044989 is an apocalyptic number.

It is an amenable number.

25163044989 is a deficient number, since it is larger than the sum of its proper divisors (11344497411).

25163044989 is a wasteful number, since it uses less digits than its factorization.

25163044989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 25163044989 in words is "twenty-five billion, one hundred sixty-three million, forty-four thousand, nine hundred eighty-nine".