1525130236 has 24 divisors (see below), whose sum is σ = 3059070336. Its totient is φ = 651739440.

The previous prime is 1525130147. The next prime is 1525130239. The reversal of 1525130236 is 6320315251.

It is a super-2 number, since 2×1525130236² = 4652044473522831392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525130239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68770 + ... + 88201.

It is an arithmetic number, because the mean of its divisors is an integer number (127461264).

Almost surely, 2^1525130236 is an apocalyptic number.

It is an amenable number.

1525130236 is an abundant number, since it is smaller than the sum of its proper divisors (1533940100).

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

1525130236 is a wasteful number, since it uses less digits than its factorization.

1525130236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157329 (or 157327 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1525130236 is about 39052.9158450429. The cubic root of 1525130236 is about 1151.0715245371.

Adding to 1525130236 its reverse (6320315251), we get a palindrome (7845445487).

The spelling of 1525130236 in words is "one billion, five hundred twenty-five million, one hundred thirty thousand, two hundred thirty-six".