7138525 has 24 divisors (see below), whose sum is σ = 9348608. Its totient is φ = 5400000.

The previous prime is 7138513. The next prime is 7138541. The reversal of 7138525 is 5258317.

It is not a de Polignac number, because 7138525 - 2¹¹ = 7136477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47200 + ... + 47350.

Almost surely, 2^7138525 is an apocalyptic number.

It is an amenable number.

7138525 is a deficient number, since it is larger than the sum of its proper divisors (2210083).

7138525 is a wasteful number, since it uses less digits than its factorization.

7138525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 248 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 7138525 is about 2671.8018264834. The cubic root of 7138525 is about 192.5467362768.

The spelling of 7138525 in words is "seven million, one hundred thirty-eight thousand, five hundred twenty-five".