25552203001 has 4 divisors (see below), whose sum is σ = 27517757092. Its totient is φ = 23586648912.

The previous prime is 25552202989. The next prime is 25552203007. The reversal of 25552203001 is 10030225552.

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 4902800400 + 20649402601 = 70020^2 + 143699^2 .

It is a cyclic number.

It is not a de Polignac number, because 25552203001 - 2⁵ = 25552202969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25552203007) 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, 982777026 + ... + 982777051.

It is an arithmetic number, because the mean of its divisors is an integer number (6879439273).

Almost surely, 2^25552203001 is an apocalyptic number.

It is an amenable number.

25552203001 is a deficient number, since it is larger than the sum of its proper divisors (1965554091).

25552203001 is a wasteful number, since it uses less digits than its factorization.

25552203001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965554090.

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 25552203001 its reverse (10030225552), we get a palindrome (35582428553).

It can be divided in two parts, 25 and 552203001, that multiplied together give a square (13805075025 = 117495²).

The spelling of 25552203001 in words is "twenty-five billion, five hundred fifty-two million, two hundred three thousand, one".