61025507 has 4 divisors (see below), whose sum is σ = 62513976. Its totient is φ = 59537040.

The previous prime is 61025479. The next prime is 61025527. The reversal of 61025507 is 70552016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61025507 - 2¹⁶ = 60959971 is a prime.

It is a super-2 number, since 2×61025507² = 7448225009214098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61025527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744173 + ... + 744254.

It is an arithmetic number, because the mean of its divisors is an integer number (15628494).

Almost surely, 2^61025507 is an apocalyptic number.

61025507 is a deficient number, since it is larger than the sum of its proper divisors (1488469).

61025507 is a wasteful number, since it uses less digits than its factorization.

61025507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488468.

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

The square root of 61025507 is about 7811.8824235904. The cubic root of 61025507 is about 393.7045785516.

The spelling of 61025507 in words is "sixty-one million, twenty-five thousand, five hundred seven".