15250452240 has 80 divisors (see below), whose sum is σ = 48375885888. Its totient is φ = 3972208128.

The previous prime is 15250452187. The next prime is 15250452251. The reversal of 15250452240 is 4225405251.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 15250452198 and 15250452207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728559 + ... + 749198.

Almost surely, 2^15250452240 is an apocalyptic number.

15250452240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15250452240 is an abundant number, since it is smaller than the sum of its proper divisors (33125433648).

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

15250452240 is a wasteful number, since it uses less digits than its factorization.

15250452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477816 (or 1477810 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 15250452240 its reverse (4225405251), we get a palindrome (19475857491).

The spelling of 15250452240 in words is "fifteen billion, two hundred fifty million, four hundred fifty-two thousand, two hundred forty".