61507025 has 6 divisors (see below), whose sum is σ = 76268742. Its totient is φ = 49205600.

The previous prime is 61507013. The next prime is 61507049. The reversal of 61507025 is 52070516.

61507025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 229441 + 61277584 = 479^2 + 7828^2 .

It is not a de Polignac number, because 61507025 - 2¹⁰ = 61506001 is a prime.

It is a super-2 number, since 2×61507025² = 7566228248701250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61506985 and 61507003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1230116 + ... + 1230165.

It is an arithmetic number, because the mean of its divisors is an integer number (12711457).

Almost surely, 2^61507025 is an apocalyptic number.

It is an amenable number.

61507025 is a deficient number, since it is larger than the sum of its proper divisors (14761717).

61507025 is a wasteful number, since it uses less digits than its factorization.

61507025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460291 (or 2460286 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 61507025 is about 7842.6414555301. The cubic root of 61507025 is about 394.7373674769.

The spelling of 61507025 in words is "sixty-one million, five hundred seven thousand, twenty-five".