25000249895 has 48 divisors (see below), whose sum is σ = 32414897088. Its totient is φ = 18504007680.

The previous prime is 25000249877. The next prime is 25000249931. The reversal of 25000249895 is 59894200052.

It is not a de Polignac number, because 25000249895 - 2¹⁶ = 25000184359 is a prime.

It is a super-2 number, since 2×25000249895² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24248030 + ... + 24249060.

It is an arithmetic number, because the mean of its divisors is an integer number (675310356).

Almost surely, 2^25000249895 is an apocalyptic number.

25000249895 is a deficient number, since it is larger than the sum of its proper divisors (7414647193).

25000249895 is a wasteful number, since it uses less digits than its factorization.

25000249895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 25000249895 in words is "twenty-five billion, two hundred forty-nine thousand, eight hundred ninety-five".