125540355 has 16 divisors (see below), whose sum is σ = 201106944. Its totient is φ = 66874080.

The previous prime is 125540351. The next prime is 125540357. The reversal of 125540355 is 553045521.

It is a happy number.

It is not a de Polignac number, because 125540355 - 2² = 125540351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125540351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9072 + ... + 18258.

It is an arithmetic number, because the mean of its divisors is an integer number (12569184).

Almost surely, 2^125540355 is an apocalyptic number.

125540355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125540355 is a deficient number, since it is larger than the sum of its proper divisors (75566589).

125540355 is an equidigital number, since it uses as much as digits as its factorization.

125540355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 125540355 is about 11204.4792382333. The cubic root of 125540355 is about 500.7194376558.

Adding to 125540355 its reverse (553045521), we get a palindrome (678585876).

The spelling of 125540355 in words is "one hundred twenty-five million, five hundred forty thousand, three hundred fifty-five".