25415542 has 16 divisors (see below), whose sum is σ = 39592800. Its totient is φ = 12221440.

The previous prime is 25415519. The next prime is 25415549. The reversal of 25415542 is 24551452.

It is a self number, because there is not a number n which added to its sum of digits gives 25415542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25415549) 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, 17334 + ... + 18742.

It is an arithmetic number, because the mean of its divisors is an integer number (2474550).

Almost surely, 2^25415542 is an apocalyptic number.

25415542 is a deficient number, since it is larger than the sum of its proper divisors (14177258).

25415542 is a wasteful number, since it uses less digits than its factorization.

25415542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751.

The product of its digits is 8000, while the sum is 28.

The square root of 25415542 is about 5041.3829451848. The cubic root of 25415542 is about 294.0129492808.

Adding to 25415542 its reverse (24551452), we get a palindrome (49966994).

It can be divided in two parts, 254155 and 42, that multiplied together give a triangular number (10674510 = T₄₆₂₀).

The spelling of 25415542 in words is "twenty-five million, four hundred fifteen thousand, five hundred forty-two".