1315525400 has 48 divisors (see below), whose sum is σ = 3495542640. Its totient is φ = 451036800.

The previous prime is 1315525381. The next prime is 1315525403. The reversal of 1315525400 is 45255131.

It is a self number, because there is not a number n which added to its sum of digits gives 1315525400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315525403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468431 + ... + 471230.

It is an arithmetic number, because the mean of its divisors is an integer number (72823805).

Almost surely, 2^1315525400 is an apocalyptic number.

1315525400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315525400 is an abundant number, since it is smaller than the sum of its proper divisors (2180017240).

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

1315525400 is a wasteful number, since it uses less digits than its factorization.

1315525400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939684 (or 939675 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1315525400 is about 36270.1723183114. The cubic root of 1315525400 is about 1095.7203963794.

The spelling of 1315525400 in words is "one billion, three hundred fifteen million, five hundred twenty-five thousand, four hundred".