61025405 has 16 divisors (see below), whose sum is σ = 84357120. Its totient is φ = 41513472.

The previous prime is 61025389. The next prime is 61025413. The reversal of 61025405 is 50452016.

It is not a de Polignac number, because 61025405 - 2⁴ = 61025389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2420 + ... + 11309.

It is an arithmetic number, because the mean of its divisors is an integer number (5272320).

Almost surely, 2^61025405 is an apocalyptic number.

It is an amenable number.

61025405 is a deficient number, since it is larger than the sum of its proper divisors (23331715).

61025405 is a wasteful number, since it uses less digits than its factorization.

61025405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13868.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 61025405 is about 7811.8758950716. The cubic root of 61025405 is about 393.7043592013.

The spelling of 61025405 in words is "sixty-one million, twenty-five thousand, four hundred five".