25431541 has 4 divisors (see below), whose sum is σ = 26927532. Its totient is φ = 23935552.

The previous prime is 25431517. The next prime is 25431569. The reversal of 25431541 is 14513452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22524516 + 2907025 = 4746^2 + 1705^2 .

It is a cyclic number.

It is not a de Polignac number, because 25431541 - 2⁵ = 25431509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25431941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747970 + ... + 748003.

It is an arithmetic number, because the mean of its divisors is an integer number (6731883).

Almost surely, 2^25431541 is an apocalyptic number.

It is an amenable number.

25431541 is a deficient number, since it is larger than the sum of its proper divisors (1495991).

25431541 is a wasteful number, since it uses less digits than its factorization.

25431541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495990.

The product of its digits is 2400, while the sum is 25.

The square root of 25431541 is about 5042.9694625290. The cubic root of 25431541 is about 294.0746297345.

Adding to 25431541 its reverse (14513452), we get a palindrome (39944993).

The spelling of 25431541 in words is "twenty-five million, four hundred thirty-one thousand, five hundred forty-one".