25427949 has 8 divisors (see below), whose sum is σ = 35378112. Its totient is φ = 16214880.

The previous prime is 25427887. The next prime is 25427951. The reversal of 25427949 is 94972452.

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

It is not a de Polignac number, because 25427949 - 2¹¹ = 25425901 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25427949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25427999) 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, 184192 + ... + 184329.

It is an arithmetic number, because the mean of its divisors is an integer number (4422264).

Almost surely, 2^25427949 is an apocalyptic number.

It is an amenable number.

25427949 is a deficient number, since it is larger than the sum of its proper divisors (9950163).

25427949 is a wasteful number, since it uses less digits than its factorization.

25427949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368547.

The product of its digits is 181440, while the sum is 42.

The square root of 25427949 is about 5042.6133105762. The cubic root of 25427949 is about 294.0607838596.

It can be divided in two parts, 254 and 27949, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 25427949 in words is "twenty-five million, four hundred twenty-seven thousand, nine hundred forty-nine".