61123525 has 24 divisors (see below), whose sum is σ = 77841000. Its totient is φ = 47596800.

The previous prime is 61123523. The next prime is 61123541. The reversal of 61123525 is 52532116.

It can be written as a sum of positive squares in 12 ways, for example, as 57289761 + 3833764 = 7569^2 + 1958^2 .

It is not a de Polignac number, because 61123525 - 2¹ = 61123523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 61123525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61123523) 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, 227091 + ... + 227359.

It is an arithmetic number, because the mean of its divisors is an integer number (3243375).

Almost surely, 2^61123525 is an apocalyptic number.

It is an amenable number.

61123525 is a deficient number, since it is larger than the sum of its proper divisors (16717475).

61123525 is a wasteful number, since it uses less digits than its factorization.

61123525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 484 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 61123525 is about 7818.1535543887. The cubic root of 61123525 is about 393.9152527149.

It can be divided in two parts, 61 and 123525, that multiplied together give a square (7535025 = 2745²).

The spelling of 61123525 in words is "sixty-one million, one hundred twenty-three thousand, five hundred twenty-five".