251202094240 has 24 divisors (see below), whose sum is σ = 593464948020. Its totient is φ = 100480837632.

The previous prime is 251202094237. The next prime is 251202094261. The reversal of 251202094240 is 42490202152.

It can be written as a sum of positive squares in 2 ways, for example, as 249844024336 + 1358069904 = 499844^2 + 36852^2 .

It is a super-3 number, since 3×251202094240³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785006385 + ... + 785006704.

Almost surely, 2^251202094240 is an apocalyptic number.

251202094240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251202094240 is an abundant number, since it is smaller than the sum of its proper divisors (342262853780).

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

251202094240 is a wasteful number, since it uses less digits than its factorization.

251202094240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570013104 (or 1570013096 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 251202094240 its reverse (42490202152), we get a palindrome (293692296392).

The spelling of 251202094240 in words is "two hundred fifty-one billion, two hundred two million, ninety-four thousand, two hundred forty".