20523401250 has 80 divisors (see below), whose sum is σ = 55955113632. Its totient is φ = 4975360000.

The previous prime is 20523401237. The next prime is 20523401263. The reversal of 20523401250 is 5210432502.

It is an interprime number because it is at equal distance from previous prime (20523401237) and next prime (20523401263).

It is a self number, because there is not a number n which added to its sum of digits gives 20523401250.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 207519 + ... + 290018.

Almost surely, 2^20523401250 is an apocalyptic number.

20523401250 is an abundant number, since it is smaller than the sum of its proper divisors (35431712382).

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

20523401250 is a wasteful number, since it uses less digits than its factorization.

20523401250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497573 (or 497558 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20523401250 its reverse (5210432502), we get a palindrome (25733833752).

The spelling of 20523401250 in words is "twenty billion, five hundred twenty-three million, four hundred one thousand, two hundred fifty".