25025378766 has 16 divisors (see below), whose sum is σ = 50081883600. Its totient is φ = 8336605248.

The previous prime is 25025378761. The next prime is 25025378789. The reversal of 25025378766 is 66787352052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025378761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286461 + ... + 1305768.

It is an arithmetic number, because the mean of its divisors is an integer number (3130117725).

Almost surely, 2^25025378766 is an apocalyptic number.

25025378766 is an abundant number, since it is smaller than the sum of its proper divisors (25056504834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25025378766 is a wasteful number, since it uses less digits than its factorization.

25025378766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593843.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 25025378766 in words is "twenty-five billion, twenty-five million, three hundred seventy-eight thousand, seven hundred sixty-six".