25275251390 has 24 divisors (see below), whose sum is σ = 47010407400. Its totient is φ = 9783964560.

The previous prime is 25275251371. The next prime is 25275251401. The reversal of 25275251390 is 9315257252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305440 + ... + 1324659.

It is an arithmetic number, because the mean of its divisors is an integer number (1958766975).

Almost surely, 2^25275251390 is an apocalyptic number.

25275251390 is a deficient number, since it is larger than the sum of its proper divisors (21735156010).

25275251390 is a wasteful number, since it uses less digits than its factorization.

25275251390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630168 (or 2630137 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The spelling of 25275251390 in words is "twenty-five billion, two hundred seventy-five million, two hundred fifty-one thousand, three hundred ninety".