1525290140 has 24 divisors (see below), whose sum is σ = 3494301552. Its totient is φ = 554650880.

The previous prime is 1525290139. The next prime is 1525290163. The reversal of 1525290140 is 410925251.

It is a super-2 number, since 2×1525290140² = 4653020022362439200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3466349 + ... + 3466788.

It is an arithmetic number, because the mean of its divisors is an integer number (145595898).

Almost surely, 2^1525290140 is an apocalyptic number.

1525290140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525290140 is an abundant number, since it is smaller than the sum of its proper divisors (1969011412).

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

1525290140 is a wasteful number, since it uses less digits than its factorization.

1525290140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933157 (or 6933155 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1525290140 is about 39054.9630648910. The cubic root of 1525290140 is about 1151.1117515954. Note that the first 3 decimals are identical.

The spelling of 1525290140 in words is "one billion, five hundred twenty-five million, two hundred ninety thousand, one hundred forty".