25615263 has 8 divisors (see below), whose sum is σ = 34732800. Its totient is φ = 16787288.

The previous prime is 25615259. The next prime is 25615297. The reversal of 25615263 is 36251652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25615263 - 2² = 25615259 is a prime.

It is a super-2 number, since 2×25615263² = 1312283397118338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25615263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25615223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72183 + ... + 72536.

It is an arithmetic number, because the mean of its divisors is an integer number (4341600).

Almost surely, 2^25615263 is an apocalyptic number.

25615263 is a deficient number, since it is larger than the sum of its proper divisors (9117537).

25615263 is a wasteful number, since it uses less digits than its factorization.

25615263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144781.

The product of its digits is 10800, while the sum is 30.

The square root of 25615263 is about 5061.1523391417. The cubic root of 25615263 is about 294.7810805179.

It can be divided in two parts, 25615 and 263, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 25615263 in words is "twenty-five million, six hundred fifteen thousand, two hundred sixty-three".