25158400996 has 27 divisors (see below), whose sum is σ = 44696051337. Its totient is φ = 12390925680.

The previous prime is 25158400991. The next prime is 25158401057. The reversal of 25158400996 is 69900485152.

The square root of 25158400996 is 158614.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1113556900 + 24044844096 = 33370^2 + 155064^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25158400991) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22522630 + ... + 22523746.

Almost surely, 2^25158400996 is an apocalyptic number.

25158400996 is the 158614-th square number.

It is an amenable number.

25158400996 is a deficient number, since it is larger than the sum of its proper divisors (19537650341).

25158400996 is an frugal number, since it uses more digits than its factorization.

25158400996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 49.

Multiplying 25158400996 by its sum of digits (49), we get a square (1232761648804 = 1110298²).

The spelling of 25158400996 in words is "twenty-five billion, one hundred fifty-eight million, four hundred thousand, nine hundred ninety-six".