10125551 has 2 divisors, whose sum is σ = 10125552. Its totient is φ = 10125550.

The previous prime is 10125547. The next prime is 10125569. The reversal of 10125551 is 15552101.

It is a happy number.

10125551 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (15552101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10125551 - 2² = 10125547 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10125541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5062775 + 5062776.

It is an arithmetic number, because the mean of its divisors is an integer number (5062776).

Almost surely, 2^10125551 is an apocalyptic number.

10125551 is a deficient number, since it is larger than the sum of its proper divisors (1).

10125551 is an equidigital number, since it uses as much as digits as its factorization.

10125551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 10125551 is about 3182.0670954585. The cubic root of 10125551 is about 216.3413598182.

Adding to 10125551 its reverse (15552101), we get a palindrome (25677652).

It can be divided in two parts, 101 and 25551, that added together give a palindrome (25652).

The spelling of 10125551 in words is "ten million, one hundred twenty-five thousand, five hundred fifty-one".