25250000251 has 8 divisors (see below), whose sum is σ = 29034182144. Its totient is φ = 21510078120.

The previous prime is 25250000233. The next prime is 25250000267. The reversal of 25250000251 is 15200005252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25250000251 - 2²³ = 25241611643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25250000221) 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, 11063715 + ... + 11065996.

It is an arithmetic number, because the mean of its divisors is an integer number (3629272768).

Almost surely, 2^25250000251 is an apocalyptic number.

25250000251 is a deficient number, since it is larger than the sum of its proper divisors (3784181893).

25250000251 is a wasteful number, since it uses less digits than its factorization.

25250000251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22129881.

The product of its (nonzero) digits is 1000, while the sum is 22.

The spelling of 25250000251 in words is "twenty-five billion, two hundred fifty million, two hundred fifty-one", and thus it is an aban number.