25953015377 has 4 divisors (see below), whose sum is σ = 25954308660. Its totient is φ = 25951722096.

The previous prime is 25953015367. The next prime is 25953015383. The reversal of 25953015377 is 77351035952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13752487441 + 12200527936 = 117271^2 + 110456^2 .

It is a cyclic number.

It is not a de Polignac number, because 25953015377 - 2⁶ = 25953015313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25953015367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616058 + ... + 656835.

It is an arithmetic number, because the mean of its divisors is an integer number (6488577165).

Almost surely, 2^25953015377 is an apocalyptic number.

It is an amenable number.

25953015377 is a deficient number, since it is larger than the sum of its proper divisors (1293283).

25953015377 is a wasteful number, since it uses less digits than its factorization.

25953015377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293282.

The product of its (nonzero) digits is 992250, while the sum is 47.

The spelling of 25953015377 in words is "twenty-five billion, nine hundred fifty-three million, fifteen thousand, three hundred seventy-seven".