1250001525 has 24 divisors (see below), whose sum is σ = 2122529824. Its totient is φ = 648648000.

The previous prime is 1250001509. The next prime is 1250001527. The reversal of 1250001525 is 5251000521.

It is not a de Polignac number, because 1250001525 - 2⁴ = 1250001509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250001527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222451 + ... + 228000.

Almost surely, 2^1250001525 is an apocalyptic number.

1250001525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1250001525 is a deficient number, since it is larger than the sum of its proper divisors (872528299).

1250001525 is a wasteful number, since it uses less digits than its factorization.

1250001525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450501 (or 450496 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1250001525 is about 35355.3606260776. The cubic root of 1250001525 is about 1077.2177830842.

The spelling of 1250001525 in words is "one billion, two hundred fifty million, one thousand, five hundred twenty-five".