61499525 has 12 divisors (see below), whose sum is σ = 77227200. Its totient is φ = 48575280.

The previous prime is 61499519. The next prime is 61499527. The reversal of 61499525 is 52599416.

It is not a de Polignac number, because 61499525 - 2⁴ = 61499509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61499527) 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, 13595 + ... + 17544.

It is an arithmetic number, because the mean of its divisors is an integer number (6435600).

Almost surely, 2^61499525 is an apocalyptic number.

It is an amenable number.

61499525 is a deficient number, since it is larger than the sum of its proper divisors (15727675).

61499525 is a wasteful number, since it uses less digits than its factorization.

61499525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31228 (or 31223 counting only the distinct ones).

The product of its digits is 97200, while the sum is 41.

The square root of 61499525 is about 7842.1632857267. The cubic root of 61499525 is about 394.7213224230.

The spelling of 61499525 in words is "sixty-one million, four hundred ninety-nine thousand, five hundred twenty-five".