25000963544 has 8 divisors (see below), whose sum is σ = 46876806660. Its totient is φ = 12500481768.

The previous prime is 25000963531. The next prime is 25000963549. The reversal of 25000963544 is 44536900052.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 25000963498 and 25000963507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000963549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562560214 + ... + 1562560229.

Almost surely, 2^25000963544 is an apocalyptic number.

It is an amenable number.

25000963544 is a deficient number, since it is larger than the sum of its proper divisors (21875843116).

25000963544 is a wasteful number, since it uses less digits than its factorization.

25000963544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125120449 (or 3125120445 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 25000963544 in words is "twenty-five billion, nine hundred sixty-three thousand, five hundred forty-four".