25815422950 has 12 divisors (see below), whose sum is σ = 48016686780. Its totient is φ = 10326169160.

The previous prime is 25815422933. The next prime is 25815422953. The reversal of 25815422950 is 5922451852.

It is a junction number, because it is equal to n+sod(n) for n = 25815422897 and 25815422906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25815422953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 258154180 + ... + 258154279.

It is an arithmetic number, because the mean of its divisors is an integer number (4001390565).

Almost surely, 2^25815422950 is an apocalyptic number.

25815422950 is a deficient number, since it is larger than the sum of its proper divisors (22201263830).

25815422950 is a wasteful number, since it uses less digits than its factorization.

25815422950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516308471 (or 516308466 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 25815422950 in words is "twenty-five billion, eight hundred fifteen million, four hundred twenty-two thousand, nine hundred fifty".