61025431 has 4 divisors (see below), whose sum is σ = 61711200. Its totient is φ = 60339664.

The previous prime is 61025413. The next prime is 61025441. The reversal of 61025431 is 13452016.

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 61025431 - 2⁹ = 61024919 is a prime.

It is a super-2 number, since 2×61025431² = 7448206457471522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61025441) 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, 342751 + ... + 342928.

It is an arithmetic number, because the mean of its divisors is an integer number (15427800).

Almost surely, 2^61025431 is an apocalyptic number.

61025431 is a deficient number, since it is larger than the sum of its proper divisors (685769).

61025431 is an equidigital number, since it uses as much as digits as its factorization.

61025431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685768.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 61025431 is about 7811.8775592043. The cubic root of 61025431 is about 393.7044151142.

Adding to 61025431 its reverse (13452016), we get a palindrome (74477447).

The spelling of 61025431 in words is "sixty-one million, twenty-five thousand, four hundred thirty-one".