2125534551 has 8 divisors (see below), whose sum is σ = 3238909824. Its totient is φ = 1214591160.

The previous prime is 2125534547. The next prime is 2125534559. The reversal of 2125534551 is 1554355212.

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

It is not a de Polignac number, because 2125534551 - 2² = 2125534547 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125534559) 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, 50607945 + ... + 50607986.

It is an arithmetic number, because the mean of its divisors is an integer number (404863728).

Almost surely, 2^2125534551 is an apocalyptic number.

2125534551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2125534551 is a deficient number, since it is larger than the sum of its proper divisors (1113375273).

2125534551 is a wasteful number, since it uses less digits than its factorization.

2125534551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101215941.

The product of its digits is 30000, while the sum is 33.

The square root of 2125534551 is about 46103.5199415403. The cubic root of 2125534551 is about 1285.7485887338.

Adding to 2125534551 its reverse (1554355212), we get a palindrome (3679889763).

The spelling of 2125534551 in words is "two billion, one hundred twenty-five million, five hundred thirty-four thousand, five hundred fifty-one".