402250251 has 24 divisors (see below), whose sum is σ = 594302016. Its totient is φ = 241768800.

The previous prime is 402250249. The next prime is 402250253. The reversal of 402250251 is 152052204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402250249) and next prime (402250253).

It is not a de Polignac number, because 402250251 - 2¹ = 402250249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402250253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12576 + ... + 31026.

It is an arithmetic number, because the mean of its divisors is an integer number (24762584).

Almost surely, 2^402250251 is an apocalyptic number.

402250251 is a deficient number, since it is larger than the sum of its proper divisors (192051765).

402250251 is a wasteful number, since it uses less digits than its factorization.

402250251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18523 (or 18510 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 402250251 is about 20056.1773775563. The cubic root of 402250251 is about 738.1853828100.

The spelling of 402250251 in words is "four hundred two million, two hundred fifty thousand, two hundred fifty-one".