25478061 has 8 divisors (see below), whose sum is σ = 38823744. Its totient is φ = 14558880.

The previous prime is 25478051. The next prime is 25478077. The reversal of 25478061 is 16087452.

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

It is not a de Polignac number, because 25478061 - 2¹³ = 25469869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478051) 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, 606600 + ... + 606641.

It is an arithmetic number, because the mean of its divisors is an integer number (4852968).

Almost surely, 2^25478061 is an apocalyptic number.

25478061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25478061 is a deficient number, since it is larger than the sum of its proper divisors (13345683).

25478061 is a wasteful number, since it uses less digits than its factorization.

25478061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213251.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 25478061 is about 5047.5797170525. The cubic root of 25478061 is about 294.2538300271.

The spelling of 25478061 in words is "twenty-five million, four hundred seventy-eight thousand, sixty-one".