25432501 has 4 divisors (see below), whose sum is σ = 25447500. Its totient is φ = 25417504.

The previous prime is 25432487. The next prime is 25432513. The reversal of 25432501 is 10523452.

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 17648401 + 7784100 = 4201^2 + 2790^2 .

It is a cyclic number.

It is not a de Polignac number, because 25432501 - 2¹⁵ = 25399733 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25432531) 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, 4576 + ... + 8473.

It is an arithmetic number, because the mean of its divisors is an integer number (6361875).

Almost surely, 2^25432501 is an apocalyptic number.

It is an amenable number.

25432501 is a deficient number, since it is larger than the sum of its proper divisors (14999).

25432501 is a wasteful number, since it uses less digits than its factorization.

25432501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14998.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25432501 is about 5043.0646436468. The cubic root of 25432501 is about 294.0783299703.

Adding to 25432501 its reverse (10523452), we get a palindrome (35955953).

The spelling of 25432501 in words is "twenty-five million, four hundred thirty-two thousand, five hundred one".